CALL TRANSFER IN A CELLULAR TELEPHONE NETWORK

Title:

CALL TRANSFER IN A CELLULAR TELEPHONE NETWORK

Document Type and Number:

WIPO Patent Application WO1997043850

Kind Code:

A3

Abstract:

Streamlined initiation of a call transfer within a cellular telephone network is effectuated by having the transfer-to C-number request include not only an identification of the B-number for the called mobile station, but also an identification number of a switching node presently handling the call. Responsive to receipt of this request, the home location register processes the B-number to identify one or more C-numbers for forwarding of the call. The home location register then determines which switching nodes currently serve the identified C-numbers and directly generates a routing request message, including the received present switching node identification number, to each of those switching nodes. This action bypasses the conventional TIA IS-41 signaling actions of returning the identified C-numbers to the present switching node and generating a location request message for delivery back to the home location register.

More Like This:

WO/2001/020921	MOBILITY EXTENDED TELEPHONE APPLICATION PROGRAMMING INTERFACE
WO/1995/001688	METHOD FOR USE IN COMPLETING TELEPHONE CALLS
WO/2001/099397	TELEPHONE CORRESPONDENT RECEPTION SYSTEM FOR UNAVAILABLE SUBSCRIBER

Inventors:

FOTI GEORGE

Application Number:

PCT/SE1997/000764

Publication Date:

February 05, 1998

Filing Date:

May 07, 1997

Export Citation:

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Assignee:

ERICSSON TELEFON AB L M (SE)

International Classes:

H04M3/54; H04W8/02; H04W4/16; (IPC1-7): H04M3/54

Domestic Patent References:

WO1992022174A1	1992-12-10
WO1995033326A2	1995-12-07
WO1995031076A2	1995-11-16

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